54 lines
885 B
Go
54 lines
885 B
Go
// Copyright (C) 2019 Marius Schellenberger
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package cache
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import (
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"git.giftfish.de/ston1th/gowiki/pkg/core"
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"sync"
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"time"
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)
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type CachedPage struct {
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Page *core.Page
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CacheTime time.Time
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}
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type Cache struct {
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sync.RWMutex
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Cache map[string]*CachedPage
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}
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func NewCache() *Cache {
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return &Cache{Cache: make(map[string]*CachedPage)}
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}
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func (c *Cache) Add(title string, p *core.Page) {
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now := time.Now()
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c.Lock()
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defer c.Unlock()
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cp, ok := c.Cache[title]
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if ok && now.After(cp.CacheTime) {
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cp.Page = p
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cp.CacheTime = now
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c.Cache[title] = cp
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return
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}
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c.Cache[title] = &CachedPage{p, now}
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}
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func (c *Cache) Get(title string) (p *core.Page) {
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c.RLock()
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defer c.RUnlock()
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if cp, ok := c.Cache[title]; ok {
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p = new(core.Page)
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*p = *cp.Page
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return
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}
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return nil
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}
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func (c *Cache) Delete(title string) {
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c.Lock()
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delete(c.Cache, title)
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c.Unlock()
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}
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